How can I convert an MP4 file to a WebM file using FFmpeg?

To convert an MP4 file to a WebM file using FFmpeg, you can use the following command in the terminal:

ffmpeg -i input.mp4 -c:v libvpx -crf 10 -b:v 1M -c:a libvorbis output.webm

This command will take the input.mp4 file and convert it to output.webm in the WebM format.